If I get 1/2 sim on March 3, and I pay my tier on March 18th (as my premium account membership bill date) will LL charge me 125USD (total amount) or will I have to pay only the half month, 65USD? Also: if I have a credit card registered and US Dollar balance, will Linden get my tier from my US Dollar balance or will they charge the tier in my credit card ? In case I have not enough USD, will they share the payment between both options or will they charge the tier only on my credit card ? Thank you !